Ball-bearing stuffing box



Oct. 27,v` 1931. M. c. sMl'rH Y 1,828,880

BALL BEARING STUFFING Box Filed April e, 1921Y INVENTOR ATTORNEYPatented Oct. 27, 1931 UNITED STATES PATENT .ol-FICE MARSHALL CHARLOCKSMITH, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO THE :BARRETTv COMPANY,A CORPORATION OF NEW JERSEY BALL-BEARING STUFFING BOX Application filed.April 6,

This invention relates to installations where it is desirable to pass arevoluble shaft through an opening and at the same time to have asuiiiciently close tit to prevent liquids or fumes from escaping betweenthe shaft and the opening through which it extends. 'Ihe invention isespecialy applicable to a shaft which extends through the cover ot' areceptacle, the shaft carrying a stirrer for the contents of thereceptacle.

-Heretofore it has been found in installations of this sort, that if thestirring blades are somewhat unbalanced or if the receptacle containslumps of material, a considerable amount ot vibration is set up, thuscausing the hole through which the shaft extends to be worn, or thepacking therein to be destroyed, thereby permitting leakage along theshaft. y

One ofthe objects of the present invention is to provide a device whichwill permit a sha-ft to revolve readily and at the same time will enablea stuffing box to be used Without causing rapid deterioration of thepacking material. Another object of the invention is to dispose thebearing elements so that tendency of the stuing box to cant or get outof place is decreased. Another object is to make provision for readyreplacement of worn parts... Another object is to provide forlubrication and "also to prevent waste of the lubricant used. Otherobjects and advantages of the invention will be obvious as thedescription proceeds.

The invention will be understood from the description Ain connectionwith the accompanying drawings, in which Fig. 1 is a sectional plan viewalong the line 1-1 of Fig. 2 of one embodiment of the invention.

Fig. 2 is a sectional view alongthe line 2--2 of Fig. 1.

Fig. 3 is a vertical sectional view of a modi- `lication of theinvention.

In the drawings reference character 1 designates the top or cover of areceptacle through which the shaft 2 projects. The cover 1 is providedwith an opening 3 surrounded by an annular ledge or projection 4. Avstuing box 5, provided with a flange 6,

is seated in the opening 3 and is fastened to the cover 1 by means ofthe bolts 7. A gland box 5 providing a space 10 for packing material ofthe usual sort. The gland 8 is fastened to the cover 1 by means of thebolts 11, andy near its lower edge is provided with an annular rim orledge 12 for seating the outer race 13 of a ball-bearing.

A ring 14 is slidably fitted on the shaft 2 in non-rotatable relationwith respect thereto and is offset at its lower portion 15 so as to fittightly within the inner race 16 of the ball-bearing. The shaft 2 isprovided With a key-*way 17 having a key 18 therein, Which key slipsinto a slot in the ring 14, thereby assuring that the ring 14 will turnwith the shaft 2. The key 18 may be provided with a screw hole 19 topermit ready removal of the key.

`The gland 8 is provided with a cover or 1 fitting 20 having an annulargroove 21 tting Varound the annular rim 22 of the ring 14,

'8 having a sloping bot-tom 9 fits in the stuiing thus eliminating thetendency to cant or til the parts. i f The modification shown in Fig. 3is similar to that above described, except that the bolts 7 hold boththe stuting box 5 and the gland 8 to the cover 1. Also, thesupplementary ring 141 and labyrinth channels are provided bot-li at theupper and lowei` portions of the ring 14 to` prevent oil from escaping.The rings 141 and 14 are referred to,- in the claims tothismodification, as a single ring, and, in fact, they may be so puttogether that for 'all practical purposes they constif,

tute a single integral ring. f-

When it is desired to replace the packing materiahthe nuts are loosenedfrom the bolts 11 and the gland carrying the ball-bearing etc. is causedto slide the proper distance upwardly along the shaft 2. When itisderedto inspect or clean the ball-bearing, the screw 23 maybe removed and thecover 20 slid u p- Wardly, thereby giving to the parts.

I claim; 3 l 1. In combination, a stuing box, a paoliing gland in saidstuffing box, a rlng m said stuiiingboxhaving an annular rim bn theupper edge thereofl and a fitting for said stung box covering saidpacking gland and having an annular groove on the underside thereof inwhich said annularrim rotatably resides, all'of the aforementionedelements may pass thru saidy stuiiing box, and a cover being adapted toreceive a shaft therethrough and said ring being adapted to be slidably-but non-rotatably' secure to said shaft. 2. In a stuiiing box assembly,a ring ha an annular rim upon the upper edge thereo i .said ring beingadapted to be slidably butA non-rotatably secured to tlie shaft whichfor said stuifng box havin an annular groove :,esaeso y upon theunderside thereo into which ve sald annular rim rotatably resides to orma` labyrinth seal for said stulling box. l

3. In combination, a stuing box, a packing gland in said stuiiing boxhaving a cylindi'il cal body portion with an inside annularshoulball-bearing, said rin rim upon the up r ed der` at the lower endthereof, a ball-bearing in said landhaving its outer race immovablypositioned a ainst said annular shoul der, a ring carrie by theinner aceof said having an annular ge thereof, and a fitting for said st oove onannular -rim rotatably resides, all of the aforementioned elements beingadapted xto receive a shaft therethrough and said ring being adapt- ,edt0 be slidably but non-rotatably secured to said shaft. t l

'side thereof in which 4. Incombination astuin box a acln'n gland forsaid stuiiin'g box,g a bill-bearing having its outer race immovablypositioned in said gland, a ring carried by the inner race of saidball-bearing havin an annular rim upon the uppoer edge thereo and aittin for said stuiiing ox covering said packing g and and having anannular groove on the undersaid rim rotatably rev sides, a ll of theaforementioned elements being ada ted to receive a shaft therethrou h.and sai ring being adapted to but nonfrotatably secured to said shaft.

5. combination, a stuffing box, a packin gland in said stuffing boxhaving a cylindric ody portion with an inside annular shoulder at thelower end thereof, said shoulder having anl annular groove upon theupper face thereof, a ball-bearing in said outer raceimmovably-positloned a ainst said annular shoulder, a fitting forsald'stuing `box covering saidpacking gland and havin an annular grooven the underside ther-eo g box covering said packymg gland and havin anannular the underside thereo in which sai be vslidab y gland lnwing` itsi

